Wankel Warrior

I have a 86 6 port 13b with a street-ported engine ....i just got a downdraft weber set up and i do not know what jets to put in it please help!!

speedturn

iTrader: (1)

What size venturi do you have in the carb? The venturies are replaceable on the Weber, and the size will affect the jets that you need.

jgrewe

iTrader: (1)

You should be able to see the size in the top edge of the venturi. I'm assuming this is a 48IDA, you should have somewhere around a 38 to 42mm venturi in there depending on what it was sized for.

Wankel Warrior

Your right it is a 48IDA and i reads 37 when u look way down into the barrels

Siraniko

iTrader: (13)

I have a feeling that your IDA is off the shelf item. 37 is too small for street use. You have go up to at least a 40, 70 idle, 250+ needle/seat, 150 air and 200+ main plus total 3 progression holes per barrel. Play with jets and work your way up

Wankel Warrior

thanx bud i will try it out

jgrewe

iTrader: (1)

Venturis where hard to find a few months back we ended up going with some Gene Berg made units.